Multilink Serial interface down after adding vwic2

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Mar 16th, 2009
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All,


We added a second vwic2 card to a 2800 series routerlast week, and noticed this morning that the S0/0:0 port is down on an existing multilink connection was down. We don't know if the addition had anything to do with it, but I'm not seeing where the problem lies.


I don't see errors on the serial interfaces either.


Multilink1, bundle name is IT

Endpoint discriminator is IT

Bundle up for 2d17h, 91/255 load

Receive buffer limit 12000 bytes, frag timeout 1000 ms

0/0 fragments/bytes in reassembly list

0 lost fragments, 0 reordered

0/0 discarded fragments/bytes, 0 lost received

0x0 received sequence, 0x0 sent sequence

Member links: 1 active, 1 inactive (max not set, min not set)

Se0/0/1:0, since 01:10:06

Se0/0/0:0 (inactive)

No inactive multilink interfaces




interface Multilink1

ip address 172.x.x.x 255.255.255.0

ppp multilink

ppp multilink group 1

!

interface Serial0/0/0:0

bandwidth 1544

no ip address

encapsulation ppp

ppp multilink

ppp multilink group 1

!

interface Serial0/0/1:0

bandwidth 1544

no ip address

encapsulation ppp

ppp multilink

ppp multilink group 1

!


show controlller T1

T1 0/0/0 is up.

Applique type is Channelized T1

Cablelength is long gain36 0db

No alarms detected.

alarm-trigger is not set

Version info Firmware: 20040802, FPGA: 13, spm_count = 0

Framing is ESF, Line Code is B8ZS, Clock Source is Line.

CRC Threshold is 320. Reported from firmware is 320.

Data in current interval (523 seconds elapsed):

0 Line Code Violations, 0 Path Code Violations

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

Total Data (last 24 hours)

0 Line Code Violations, 0 Path Code Violations,

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins,

0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs


show int s0/0/0:0


Serial0/0/0:0 is up, line protocol is down

Hardware is GT96K Serial

MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation PPP, LCP Listen, multilink Closed, loopback not set

Keepalive set (10 sec)

Last input 00:00:22, output 00:00:22, output hang never

Last clearing of "show interface" counters 2d17h

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: weighted fair

Output queue: 0/1000/64/0 (size/max total/threshold/drops)

Conversations 0/1/256 (active/max active/max total)

Reserved Conversations 0/0 (allocated/max allocated)

Available Bandwidth 1158 kilobits/sec

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

47276 packets input, 1087348 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

94628 packets output, 2934076 bytes, 0 underruns

0 output errors, 0 collisions, 4740 interface resets

0 output buffer failures, 0 output buffers swapped out

1 carrier transitions

Timeslot(s) Used:1-24, SCC: 0, Transmitter delay is 0 flags




We've open and closed the serial interface, but it didn't help.


Thanks,

John

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John Blakley Mon, 03/16/2009 - 09:30
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The other end "show controller T1" output:


T1 0/0 is up.

Applique type is Channelized T1

Cablelength is long gain36 0db

No alarms detected.

alarm-trigger is not set

Soaking time: 3, Clearance time: 10

AIS State:Clear LOS State:Clear LOF State:Clear

Version info Firmware: 20040802, FPGA: 13, spm_count = 0

Framing is ESF, Line Code is B8ZS, Clock Source is Line.

CRC Threshold is 320. Reported from firmware is 320.

Data in current interval (607 seconds elapsed):

0 Line Code Violations, 278 Path Code Violations

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 10 Degraded Mins

160 Errored Secs, 94 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

Total Data (last 24 hours)

0 Line Code Violations, 42867 Path Code Violations,

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 1440 Degraded Mins,

27072 Errored Secs, 10380 Bursty Err Secs, 2 Severely Err Secs, 0 Unavail Secs



Richard Burts Mon, 03/16/2009 - 09:47
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John


A little while back I had an issue that was somewhat similar (especially in what seems to be a uni-directional problem - one end looks clean and the other end is taking errors, and the interface reports protocol down). In our case it turned out to be a problem in the provider network. It was a bit ambiguous whether it was really inside their network or whether it was at the smart jack.


I would suggest asking the provider to check the circuit.


HTH


Rick

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